4-66.1. TANK LEVEL INDICATION - RECEIVER - MAINTENANCE INSTRUCTIONS (Continued)
ADJUSTMENTS AND ALIGNMENTS (Cont)
Manually raise the float of the transmitter until the float center is at the dimensional equivalent on
the sounding tape of the next higher desired gallonage increment interpolated in step (d).
Mark the meter face with a pencil at the point of meter deflection and label it with the applicable
gallonage increment or record the current value, whichever is applicable.
Repeat procedures outlined in steps (k) and (1) for each successive gallonage increment to be
At gallonage increments corresponging to low- and high-level
alarm points interpolated from the sounding table, mark or
record the points of deflection on the meter face in pencil.
Upon completion of the making of the pencil markings for the full range of tank indications, mark
over the pencil marks in ink or with some other permanent marker.
Reassemble the face frame and glass to the meter and secure them with the frame mounting
screws and lockwashers.
Liquid-In-Tank Calibration. To calibrate a meter in a fluid tank to which fluid can be added, proceed
Place the ON-OFF-FULL REF switch or the ON-OFF switch, whichever is applicable, in the ON
(b) Fill the tank with known increments of water, marking the meter face in pencil at the deflection
point that is realized for appropriate fluid level indications or recording the current value, whichever is
(c) Upon completion of the calibration in pencil for the full range of tank indications, mark over the
pencil marks in ink or with some other permanent marker.
(d) Reassemble the face frame and glass to the meter and secure with the frame mounting screws and